Shuttle motion for narrow ware looms



ct 6, 1931. M. J. FLYNN 1,326,394

SHUTTLE MOTION FOR NARROW WARE LOOMS Filed Aug. 7. 1950 A 7'7'UP/VE Y5 Patented Oct; .6, 1931 MAURICE J; ELYZNN, or .wonoEsTn-R, amssncnosn'r'rs, Assrenon' ro CROIVIPTON &-

PATENT OFFICE KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS SHUTTLE MOTION FOR NARROW W'ARE LQOMS Application filed August 7, 1930. Serial No. 473,592.

This invention relates to improvements in shuttle motions for narrow ware looms and itis the general object of the invention to provide a simplified connection between an actuating slide and the rack rod to the end that the movements of the latter may be more precise than are possible with thepresent forms of flexible connections.

Narrow ware looms have a lay along which reciprocates a long rack meshing with a number of small pinions which reciprocate the shuttles. It is customary practice to actuate the rack through flexible. connections such as straps or chains which are found to lengthen during use so as togive uncertain movements to the rack. It is a further object of'my present invention to attach the rack rod directly to, a power transmitting device movabie angular] y about the pivot of the lay and also slidable alongthe pivot,this arrangement permitting the use of durable connections between the various parts. f

I In prior patent toHolmesNo. 1,668,150 there is'shown a sliding actuator which may be driven so as to have a dwell motion'at the time the'lay is beating the filling into the fabric. It is a further object of my invention to require this sliding actuator to move along the axis of the lay and have direct engagement with the transmitter so that the transfer of power from the driving shaft to the rack may be through. a minimum number of parts.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination. and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein a convenient embodiment'of my invention is set forth, a v

Fig. l is a rear elevation of a portion of a narrow ware loom having my invention'applied thereto, I V

Fig. 2 is avertical section on line 2-2 of Fig. 1

Fig.2 is a detailed section through the lay similar to that shown in Fig. 2,' but on an enlarged scale,

' Fig. 4 is an enlarged rear elevation of the connection between the transmitter and the rack rod, and.

Fig. 5 is a detail vertical section online 55 of Fig. 1.

Referring to Figs. 1 and 2, I have shown a loom lay 10 having a rack rod 11 movable longitudinally therein to co-act with a series of pinions 12. The lay is mounted on swords one of which is shown at 13 and moves pivotally about theguide rod 14 secured near the bottom of the loom toa fixed frame 15. The rod 14L corresponds to the usual rockershaft, and its fun ctiomso far as the lay is concerned, is to provide a pivot for the latter. The frame is supported by the loomside 16 as shown in Fig. 1. A motor 17 is connected by appropriate gearing designated at 18 to a shaft 19 which rotates i i-bearings 20 carried by fixed structure forming a part of the frame of the loom. The shaft 19 has secured thereto a driving bevel gear 21 which meshes with the second bevel gear 22 mounted on an inclined shaft 23 to the forward end of which is secured a crank arm 24 having a pin 25.

The latter is movable vertically in a slot 26 carried by a sliding actuator-27the lower part of which may be grooved as at 28 to receive a guide 29 which is fixed to the loom.

During running of the loom the shaft 19 will rotate to cause the crank arm 24 torevolve about the shaft 23,'the pin moving up and down in the slot 26 and causing the actuator to reciprocate in a horizontal direcnon, r

The matter thus far described is of common construction and may be substantially the same as shown in the aforesaid Holmes patent and 'ofits-elf forms no part'of my present. invention In carrying my improvements into effect 1 form the actuator with slide-bearings 40 mounted to reciprocate on the guide rod 14-, said guide rod together with the guide bar 29 requiring the actuator tomove back and forth in a fixed path in a direction parallel to the axis of the lay. A transmi ter designated generally at 4.1 has the upper end 42 thereofformed to, receive a tongue 43 de pending'from a small bracket 4 1 bolted or otherwisesecured to, the rack rod 11. A bolt 45 which attaches the tongue and end 42 together has its axis substantially parallel to the rack rod, thus permitting angular adjustment of the tongue with respect to the actuator when the parts are assembled.

The lower end of the actuator is forked to form two diverging arms 46 and I? which extend, respectively, to the right and left as seen in Fig. 1, and each arm is provided with a slide bearing 48 through which the guide rod 14 extends. The bearings 48 lie between and have engagcn'ient with the side bearings 40 on the actuator 27, so that movements of the latter along the guide rod require the transmitter to move positively in both Clll ections.

In operation, the reciprocations of the actuator will cause the transmitter to move first to the right and then to the left as viewed in Fig. 1 in a direction parallel to the length of the lay, thereby causing' the rack rod 11 to reciprocate and rotate the pinions 12 first in one direction and then in the other to drive the shuttles not shown through their respective sheds. The lay swings about the guide rod as an axis and inasmuch as this is also the center of rotation or" the transmitter there is no relative movement between the latter and the rack rod. Hence, the connection between the rack rod and transmitter illustrated in Figs. 3 and may be made as substantial as required.

From the foregoing it will be seen that I have provided a simple and direct connection between the sliding actuator and the rack rod the form of a rigid transmitter which moves about the axis of the lay in a way to prevent relative movement between the transmitter and the rack rod. Also, the transmitter may be adjusted angularly with respect to the rack rod to accommodate any slight variations in which may result from the commercial manufacture of the transmitter and parts connected thereto. lVhile it is convenient to mount the actuator on the guide rod ll, yet I do not wish to be limited to the arrangement.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom, a rack rod to be reciprocated, a lay on which the rack rod is mounted, moans defining a pivot for the lay substantially parallel to the lay, an actuator reciprocable in a direction having a component parallel to the rack rod, and a rigid transmitter of power held against angular movement in a plane parallel to the direction of movement of the actuator and movable pivotally about the pivot oi the lay and connected to the rack rod and operatively connected to the actuator to be moved by the latter.

2. In a narrow ware loom, a rack rod, a lay to support the rack rod, a pivot for the lay, a power transmitter connected to the rack rod and movable angularly about the pivot of the lay, and an actuator reciprocable in a direction substantially parallel to the pivot and operatively connected to the transmitter to move the latter and the rack rod, said transmitter held against angular movement in a plane parallel to the direction of movement of the actuator.

3. In a narrow Ware loom, a lay, means defining a pivot therefor. a rack rod movable longitudinally along the lay substantially parallel to the pivot, an actuator reciprocating in a direction substantially parallel to the rack rod, and a rigid power transmitter attached rigidly to the rack rod and pivotally mounted to swing about the pivot of the lay and along said pivot by the actuator.

4. In a narrow ware loom, a lay, means dofining a pivot therefor. a raclz rod movable longitudinally along the lay substantially parallel to the pivot, an actuator reciprocating in a direction substantially parallel to the rack rod. a rigid power transmitter attached rigidly to the rack rod and pivotally mounted to swing about the pivot of the lay and along said pivot by the actuator, and an angularly movable connection between the I transmitter and rack rod.

5. In a narrow ware 100m, a. lay, a longitudinally extending member substantially parallel to the lay defining a pivotal support around which the lay swings, a rack rod reciprocably mounted on the lay, a rigid power 7 transmitter slidably and pivotally mounted on the member, and means to reciprocate the transmitter along the member to reciprocate the rack rod.

6. In a narrow ware loom, a lay, a longitudinally extending member substantially parallel to the lay defining a pivotal support around which the lay swings, a rack rod reciprocably mounted on the lay, a rigid power transmitter slidably and pivotally mounted on the member, and means to reciprocate the transmitter along the member to reciprocate the rack rod, said means sliding on the member.

7. In a narrow ware loom, a lay, a longitudinally extending member substantially parallel to the lay defining a pivotal support around which the lay swings, a rack rod reciprocably mounted on the lay, a rigid power transmitter slidably and pivotally mounted on the member, and means to reciprocate the transmitter along the member to reciprocate the rack rod, said means sliding on the member and having direct engagement with the transmitter to move th latter positively in opposite directions.

In testimony whereof I have hereunto atfiXed my signature.

MAURICE J. FLYNN. 

